معهد أبحاث الفضاء والطيران

قاربت المركبة فويجر ١ والتي تم إطلاقها في العام ١٩٧٧ من أن يصل مداها إلى يوم ضوئي ، حيث تستغرق الموجات الكهرومغناطيسية ومنها الضوء ٢٤ ساعة لقطع تلك المسافة.

Launched on September 5, 1977, Voyager 1 was designed to explore Jupiter and Saturn and then just kept going. In 2012, it crossed the heliopause, leaving the solar system and entering interstellar space as the first human-made object to do so. Today, it’s approaching a staggering milestone: 1 light-day from Earth, roughly 16 billion miles (26 billion kilometers).

At this distance, even a light-speed signal takes 24 hours to reach Voyager 1. For comparison: the Moon is 1.3 light-seconds away, Mars about 3 light-minutes, and Pluto 5.5 light-hours. Voyager 1 continues traveling at 38,000 mph, powered by a decaying plutonium generator and running on its 1970s-era computer systems.

Though its instruments will stop transmitting around 2030, Voyager 1 will keep drifting silently through interstellar space, carrying the Golden Record Earth’s sounds, music, images, and greetings. In 40,000 years, it will pass near another star, and in 300 million years, it will complete one orbit of the Milky Way. Even as humanity changes, this tiny spacecraft will remain a testament to human curiosity and ambition.

Credits / Sources
Credit: NASA Voyager Mission, Jet Propulsion Laboratory (JPL)

اعرف لماذا تتوالى فصول السنة على الأرض بسبب ميلان محور دورانها.

Why do we have Seasons on Earth? | How Seasons change on Earth? #Seasons #Earth #Science #Astronomy #Space #TheInfiniteMadness #Summer #Winter #Spring #Autumn #Equinox #Solstice #WhyWeHaveSeasons #EarthTilt #Orbit #ScienceExplained #Shorts #SpaceFacts

اكتشاف جديد لكوكب قابل للحياة يدور حول نجم يبعد عننا فقط ١٨ سنة ضوئية.

There's a new potentially habitable super-Earth, and it's only 18 light-years away! 🌎🌌

Astronomers have discovered another potentially habitable orbiting a nearby star. A team of researchers, led by the University of California Irvine, said this month that the planet - - is in the habitable zone of its red dwarf star, 18 light-years away. The habitable zone is the region of space around a star in which liquid water might exist. This newly discovered planet is likely rocky, like Earth. But it's about 4 times more massive: hence, a super-Earth. It orbits its star every 54 days.

Find out more about GJ 251 c:
https://earthsky.org/space/super-earth-18-light-years-gj-251-c-habitable/

📸 Artist’s concept of GJ 251 c. Image via Michael Marcheschi/ m2design/ University of California Irvine.

جدول فعاليات أسبوع الفضاء العالمي في السودان والتي تبدأ اليوم.